<template>
  <div>
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加区域 -->
      <el-row :gutter="20">
        <el-col :span="8">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表区域 -->
      <el-table :data="userlist" border stripe>
        <el-table-column type="index" label="序号"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <!--分配角色按钮-->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange" @current-change="handleCurrentChange" :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 5, 10]" :page-size="queryInfo.pagesize" layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <!-- 内容主体区域 -->
      <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <!-- 对话框底部的按钮区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form ref="editFormRef" :model="editForm" label-width="70px" :rules="editFormRules">
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机号" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户:{{userInfo.username}}</p>
        <p>当前的角色:{{userInfo.role_name}}</p>
        <p>分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
  export default {
    data() {
      // 验证邮箱的规则
      var checkEmail = (rule, value, cb) => {
        // 验证邮箱的正则表达式
        const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
        if (regEmail.test(value)) {
          // 合法邮箱
          return cb()
        }
        cb(new Error('请输入合法的邮箱'))
      }
      // 验证手机号的规则
      var checkMobile = (rule, value, cb) => {
        // 验证手机号的规则
        const regMobile = /^1([38][0-9]|4[579]|5[0-3,5-9]|6[6]|7[0135678]|9[89])\d{8}$/
        if (regMobile.test(value)) {
          // 合法邮箱
          return cb()
        }
        cb(new Error('请输入合法的手机号'))
      }
      return {
        // 获取用户列表的参数对象
        queryInfo: {
          query: '',
          // 当前的页数
          pagenum: 1,
          // 当前每页显示多少条数据
          pagesize: 2
        },
        userlist: [],
        total: 0,
        // 控制添加用户对话框的显示与隐藏
        addDialogVisible: false,
        // 添加用户的表单数据
        addForm: {
          username: '',
          password: '',
          email: '',
          mobile: ''
        },
        // 添加表单的验证规则对象
        addFormRules: {
          username: [{
              required: true,
              message: '请输入用户名',
              trigger: 'blur'
            },
            {
              min: 3,
              max: 10,
              message: '用户名的长度在3~10个字符之间',
              trigger: 'blur'
            }
          ],
          password: [{
              required: true,
              message: '请输入密码',
              trigger: 'blur'
            },
            {
              min: 6,
              max: 15,
              message: '用户名的长度在6~15个字符之间',
              trigger: 'blur'
            }
          ],
          email: [{
              required: true,
              message: '请输入邮箱',
              trigger: 'blur'
            },
            {
              validator: checkEmail,
              trigger: 'blur'
            }
          ],
          mobile: [{
              required: true,
              message: '请输入手机号',
              trigger: 'blur'
            },
            {
              validator: checkMobile,
              trigger: 'blur'
            }
          ]
        },
        // 控制修改用户对话框的显示与隐藏
        editDialogVisible: false,
        // 查询到用户信息对象
        editForm: {},
        // 修改表单的验证规则对象
        editFormRules: {
          email: [{
              required: true,
              message: '请输入用户邮箱',
              trigger: 'blur'
            },
            {
              validator: checkEmail,
              trigger: 'blur'
            }
          ],
          mobile: [{
              required: true,
              message: '请输入用户手机',
              trigger: 'blur'
            },
            {
              validator: checkMobile,
              trigger: 'blur'
            }
          ],
        },
        //控制分配角色对话框的显示与隐藏
        setRoleDialogVisible: false,
        // 需要被分配角色的用户信息
        userInfo: {},
        // 所有角色的数据列表信息
        rolesList: [],
        // 已选中的角色Id值
        selectedRoleId: ''
      }
    },
    created() {
      this.getUserList()
    },
    methods: {
      async getUserList() {
        const {
          data: res
        } = await this.$http.get('users', {
          params: this.queryInfo
        })
        if (res.meta.status !== 200) {
          return this.$message.onError('获取用户列表失败')
        }
        this.userlist = res.data.users
        this.total = res.data.total
      },
      // 监听pagesize 改变的事件
      handleSizeChange(newSize) {
        // console.log(newSize)
        this.queryInfo.pagesize = newSize
        this.getUserList()
      },
      // 监听页码值改变的事件
      handleCurrentChange(newPage) {
        // console.log(newPage)
        this.queryInfo.pagenum = newPage
        this.getUserList()
      },
      // 监听switch 开关状态的改变
      async userStateChanged(userinfo) {
        console.log(userinfo)
        const {
          data: res
        } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
        if (res.meta.status !== 200) {
          userinfo.mg_state = !userinfo.ms_state
          return this.$message.error('更新用户状态失败')
        }
        this.$message.success('更新用户状态成功')
      },
      // 监听添加用户对话框的关闭事件
      addDialogClosed() {
        this.$refs.addFormRef.resetFields()
      },
      // 点击按钮，添加新用户
      addUser() {
        this.$refs.addFormRef.validate(async valid => {
          if (!valid) return
          // 可以发起添加用户的网络请求
          const {
            data: res
          } = await this.$http.post('users', this.addForm)
          if (res.meta.status !== 201) return this.$message.error('添加用户失败')
          this.$message.success('添加用户成功')
          // 隐藏添加的对话框
          this.addDialogVisible = false
          // 重新获取用户列表数据
          this.getUserList()
        })
      },
      // 展示编辑用户的对话框
      async showEditDialog(id) {
        const {
          data: res
        } = await this.$http.get('users/' + id)
        if (res.meta.status !== 200) return this.$message.error('查询用户信息失败')
        this.editForm = res.data
        this.editDialogVisible = true
      },
      // 监听修改用户对话框的关闭事件
      editDialogClosed() {
        this.$refs.editFormRef.resetFields()
      },
      // 修改用户信息并提交
      editUserInfo() {
        this.$refs.editFormRef.validate(async valid => {
          if (!valid) return
          // 发起修改用户信息的数据请求
          const {
            data: res
          } = await this.$http.put('users/' + this.editForm.id, {
            email: this.editForm.email,
            mobile: this.editForm.mobile
          })
          if (res.meta.status !== 200) return this.$message.error('修改用户数据失败')
          // 关闭对话框
          this.editDialogVisible = false
          // 刷新数据列表
          this.getUserList()
          // 提示修改成功
          this.$message.success('更新用户信息成功')
        })
      },
      // 根据Id删除对应的用户信息
      async removeUserById(id) {
        // 弹框询问用户是否删除数据
        const confirmResult = await this.$confirm('此操作将永久删除该用户,是否断续?', '删除用户', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)
        // 如果用户确认删除，则返回值为字符串 confirm
        // 如果用户取消了删除 则返回值为字符串 cancel
        if (confirmResult !== 'confirm') {
          return this.$message.info('已取消删除')
        }
        const {
          data: res
        } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) {
          return this.$message.error('删除用户失败!')
        }
        // 刷新数据列表
        this.getUserList()
        // 提示修改成功
        this.$message.success('删除用户成功!')
      },
      // 展示分配角色的对话框
      async setRole(userInfo) {
        this.userInfo = userInfo
        // 在展示对话框之前，获取所有角色列表
        const {
          data: res
        } = await this.$http.get('roles')
        if (res.meta.status !== 200) {
          return this.$message.error('获取角色列表失败')
        }
        this.rolesList = res.data
        this.setRoleDialogVisible = true
      },
      // 点击按钮，分配角色
      async saveRoleInfo () {
        if (!this.selectedRoleId) {
          return this.$message.error('请选择要分配的角色！')
          }
          const {data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {rid: this.selectedRoleId})
          if (res.meta.status !== 200) {
            return this.$message.error('更新角色失败!')
          }
          this.$message.success('更新角色成功!')
          this.getUserList()
          this.setRoleDialogVisible = false
      },
      // 监听分配角色对话框的关闭事件
      setRoleDialogClosed () {
        this.selectedRoleId = ''
        this.userInfo = {}
      }
    }
  }
</script>

<style lang="less" scoped="scoped">

</style>
